| b661d753 | 27-Jan-2026 |
Mark Brown <broonie@kernel.org> |
kselftest/arm64: Raise default number of loops in fp-pidbench
When fp-pidbench was originally written SVE hardware was not widely
available so it was useful to run it in emulation and the default nu
kselftest/arm64: Raise default number of loops in fp-pidbench
When fp-pidbench was originally written SVE hardware was not widely
available so it was useful to run it in emulation and the default number
of loops was set very low, running for less than a second on actual
hardware. Now that SVE hardware is reasonably available it is very much
less interesting to use emulation, bump the default number of loops up to
even out a bit of the noise on real systems. On the machine I have to hand
this now takes about 15s which is still a toy microbenchmark but perhaps a
bit more useful.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
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|
| a0245b42 | 15-Oct-2025 |
Mark Brown <broonie@kernel.org> |
kselftest/arm64: Cover disabling streaming mode without SVE in fp-ptrace
On a system which support SME but not SVE we can now disable streaming mode
via ptrace by writing FPSIMD formatted data throu
kselftest/arm64: Cover disabling streaming mode without SVE in fp-ptrace
On a system which support SME but not SVE we can now disable streaming mode
via ptrace by writing FPSIMD formatted data through NT_ARM_SVE with a VL of
0. Extend fp-ptrace to cover rather than skip these cases, relax the check
for SVE writes of FPSIMD format data to not skip if SME is supported and
accept 0 as the VL when performing the ptrace write.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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|
| 09b5febf | 20-Aug-2025 |
Mark Brown <broonie@kernel.org> |
kselftest/arm64: Check that unsupported regsets fail in sve-ptrace
Add a test which verifies that NT_ARM_SVE and NT_ARM_SSVE reads and writes
are rejected as expected when the relevant architecture
kselftest/arm64: Check that unsupported regsets fail in sve-ptrace
Add a test which verifies that NT_ARM_SVE and NT_ARM_SSVE reads and writes
are rejected as expected when the relevant architecture feature is not
supported.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
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|
| dd68f51f | 20-Aug-2025 |
Mark Brown <broonie@kernel.org> |
kselftest/arm64: Verify that we reject out of bounds VLs in sve-ptrace
We do not currently have a test that asserts that we reject attempts to set
a vector length smaller than SVE_VL_MIN or larger t
kselftest/arm64: Verify that we reject out of bounds VLs in sve-ptrace
We do not currently have a test that asserts that we reject attempts to set
a vector length smaller than SVE_VL_MIN or larger than SVE_VL_MAX, add one
since that is our current behaviour.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
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|
| 14a41628 | 26-Aug-2025 |
Nikola Z. Ivanov <zlatistiv@gmail.com> |
selftests/arm64: Fix grammatical error in string literals
Fix grammatical error in <past tense verb> + <infinitive>
construct related to memory allocation checks.
In essence change "Failed to alloca
selftests/arm64: Fix grammatical error in string literals
Fix grammatical error in <past tense verb> + <infinitive>
construct related to memory allocation checks.
In essence change "Failed to allocated" to "Failed to allocate".
Signed-off-by: Nikola Z. Ivanov <zlatistiv@gmail.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
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|
| 62e8a9fb | 24-Aug-2025 |
Vivek Yadav <vivekyadav1207731111@gmail.com> |
kselftest/arm64: Add parentheses around sizeof for clarity
Added parentheses around sizeof to make the expression clearer
and improve readability. This change has no functional impact.
```
[command
kselftest/arm64: Add parentheses around sizeof for clarity
Added parentheses around sizeof to make the expression clearer
and improve readability. This change has no functional impact.
```
[command]
./scripts/checkpatch.pl tools/testing/selftests/arm64/fp/sve-ptrace.c
[output]
WARNING: sizeof *sve should be sizeof(*sve)
```
Signed-off-by: Vivek Yadav <vivekyadav1207731111@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
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|
| a940568c | 24-Aug-2025 |
Vivek Yadav <vivekyadav1207731111@gmail.com> |
kselftest/arm64: Supress warning and improve readability
The comment was correct, but `checkpatch` script flagged it with a warning
as shown in the output section. The comment is slightly modified
t
kselftest/arm64: Supress warning and improve readability
The comment was correct, but `checkpatch` script flagged it with a warning
as shown in the output section. The comment is slightly modified
to improve readability, which also suppresses the warning.
```
[command]
./script/checkpatch.pl --strict -f tools/testing/selftests/arm64/fp/fp-stress.c
[output]
WARNING: Possible repeated word: 'on'
```
Signed-off-by: Vivek Yadav <vivekyadav1207731111@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
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|
| 4752dcc1 | 19-Jul-2025 |
Mark Brown <broonie@kernel.org> |
kselftest/arm64: Handle attempts to disable SM on SME only systems
The ABI for disabling streaming mode via ptrace is to do a write via the
SVE register set. Following the recent round of fixes to t
kselftest/arm64: Handle attempts to disable SM on SME only systems
The ABI for disabling streaming mode via ptrace is to do a write via the
SVE register set. Following the recent round of fixes to the ptrace code
we don't support this operation on systems without SVE, which is detected
as failures by fp-ptrace. Update the program so that it knows that this
operation is not currently supported.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250718-arm64-fp-ptrace-sme-only-v1-3-3b96dd19a503@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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|
| aa7d3c8b | 19-Jul-2025 |
Mark Brown <broonie@kernel.org> |
kselftest/arm64: Fix SVE write data generation for SME only systems
fp-ptrace does not handle SME only systems correctly when generating data,
on SME only systems scenarios where we are not in strea
kselftest/arm64: Fix SVE write data generation for SME only systems
fp-ptrace does not handle SME only systems correctly when generating data,
on SME only systems scenarios where we are not in streaming mode will not
have an expected vector length. This leads to attempts to do memcpy()s of
zero byte arrays which can crash, fix this by skipping generation of SVE
data for cases where we do not expect to have an active vector length.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250718-arm64-fp-ptrace-sme-only-v1-2-3b96dd19a503@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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|
| b021f45d | 19-Jul-2025 |
Mark Brown <broonie@kernel.org> |
kselftest/arm64: Test SME on SME only systems in fp-ptrace
When checking that the vector extensions are supported fp-ptrace
currently only checks for SVE being supported which means that we get
into
kselftest/arm64: Test SME on SME only systems in fp-ptrace
When checking that the vector extensions are supported fp-ptrace
currently only checks for SVE being supported which means that we get
into a confused half configured state for SME only systems. Check for
SME as well.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250718-arm64-fp-ptrace-sme-only-v1-1-3b96dd19a503@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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|
| b84d2b27 | 19-Jul-2025 |
Mark Brown <broonie@kernel.org> |
kselftest/arm64: Test FPSIMD format data writes via NT_ARM_SVE in fp-ptrace
The NT_ARM_SVE register set supports two data formats, the native SVE one
and an alternative format where we embed a copy
kselftest/arm64: Test FPSIMD format data writes via NT_ARM_SVE in fp-ptrace
The NT_ARM_SVE register set supports two data formats, the native SVE one
and an alternative format where we embed a copy of user_fpsimd_data as used
for NT_PRFPREG in the SVE register set. The register data is set as for a
write to NT_PRFPREG and changes in vector length and streaming mode are
handled as for any NT_ARM_SVE write. This has not previously been tested by
fp-ptrace, add coverage of it.
We do not support writes in FPSIMD format for NT_ARM_SSVE so we skip the
test for anything that would leave us in streaming mode.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250718-arm64-fp-ptrace-sve-fpsimd-v1-1-7ecda32aa297@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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|
| b5cebb5d | 18-Jul-2025 |
Mark Brown <broonie@kernel.org> |
kselftest/arm64: Allow sve-ptrace to run on SME only systems
Currently the sve-ptrace test program only runs if the system supports
SVE but since SME includes streaming SVE the tests it offers are v
kselftest/arm64: Allow sve-ptrace to run on SME only systems
Currently the sve-ptrace test program only runs if the system supports
SVE but since SME includes streaming SVE the tests it offers are valid
even on a system that only supports SME. Since the tests already have
individual hwcap checks just remove the top level test and rely on those.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250718-arm64-sve-ptrace-sme-only-v1-1-2a1121e51b1d@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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|
| 9e8ebfe6 | 09-Jun-2025 |
Mark Brown <broonie@kernel.org> |
kselftest/arm64: Specify SVE data when testing VL set in sve-ptrace
Since f916dd32a943 ("arm64/fpsimd: ptrace: Mandate SVE payload for
streaming-mode state") we reject attempts to write to the strea
kselftest/arm64: Specify SVE data when testing VL set in sve-ptrace
Since f916dd32a943 ("arm64/fpsimd: ptrace: Mandate SVE payload for
streaming-mode state") we reject attempts to write to the streaming mode
regset even if there is no register data supplied, causing the tests for
setting vector lengths and setting SVE_VL_INHERIT in sve-ptrace to
spuriously fail. Set the flag to avoid the issue, we still support not
supplying register data.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250609-kselftest-arm64-ssve-fixups-v2-3-998fcfa6f240@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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|
| 94ab1500 | 09-Jun-2025 |
Mark Brown <broonie@kernel.org> |
kselftest/arm64: Fix test for streaming FPSIMD write in sve-ptrace
Since f916dd32a943 ("arm64/fpsimd: ptrace: Mandate SVE payload for
streaming-mode state") we do not support writing FPSIMD payload
kselftest/arm64: Fix test for streaming FPSIMD write in sve-ptrace
Since f916dd32a943 ("arm64/fpsimd: ptrace: Mandate SVE payload for
streaming-mode state") we do not support writing FPSIMD payload data when
writing NT_ARM_SSVE but the sve-ptrace test has an explicit test for
this being supported which was not updated to reflect the new behaviour.
Fix the test to expect a failure when writing FPSIMD data to the
streaming mode register set.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250609-kselftest-arm64-ssve-fixups-v2-2-998fcfa6f240@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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|